Warning! The models of vehicles covered in this manual are equipped with a supplemental restraint system (SRS). Before performing any work near the air bag unit, steering column or instrument panel, turn off the SRS to avoid injury from accidental deployment (see On-board electrical equipment). The SRS circuit wiring is easily identified by the yellow color of the insulation.
1. Plastic grilles usually have special fasteners molded into them that snap onto the edges of the front panel of the car. To remove the grille, the fasteners must be pressed down (refer to the accompanying illustration).
2. Remove the grille from the vehicle.
3. Installation is carried out in reverse order.
(See the source on the internet resource: toyotaman)